Typhoon No. 6 made landfall in southern Wakayama Prefecture at approximately 4:30 a.m. on Wednesday [1].
The storm's movement from western to eastern Japan has created dangerous weather conditions, including the formation of linear precipitation zones that threaten the Kanto region with severe flooding and high winds [4].
In Wakayama Prefecture, the severity of the rainfall led authorities to issue a Level 5 emergency warning for flooding in the Koza River system [1], [3]. This represents the highest level of alert, signaling an immediate threat to life and property.
As the system moved east, the Kanto region faced direct impacts. A reporter from FNN said, "Typhoon No. 6 made landfall in Wakayama early this morning and is expected to make its closest approach to Kanto shortly" [1].
Heavy rainfall has been reported across several prefectures, including Shizuoka, Kanagawa, and southern Chiba [1], [2]. In southern Chiba Prefecture, rainfall reached 70 millimeters per hour [2]. While some reports focused on the intensity of rain in Chiba, other reports indicated that linear precipitation zones had formed in Kanagawa Prefecture [2], [1].
An MSN weather report said, "The large Typhoon No. 6, which is raging in various regions, is currently hitting Kanto" [3]. Residents in the Kanto region have been advised to maintain strict vigilance through Wednesday evening as the storm continues its trajectory [1].
Emergency services have been on high alert as the storm brings combined threats of landslides and urban flooding. A report from MSN disaster services said, "A Level 5 flood special warning was issued for the Koza River system" [3].
“A Level 5 emergency warning for flooding was issued in the Koza River system.”
The issuance of a Level 5 warning, the highest possible alert in Japan's disaster hierarchy, indicates that the storm's interaction with linear precipitation zones is creating catastrophic flooding risks. The rapid movement of the storm from Wakayama into the densely populated Kanto region increases the risk of widespread infrastructure disruption and casualties if evacuation orders are not followed immediately.
